[SR-1748] Run the Swift test suite on an Android emulator (instead of a real device)

[modocache]

Previous ID	SR-1748
Radar	None
Original Reporter	@modocache
Type	New Feature

Additional Detail from JIRA

Votes	0
Component/s	Project Infrastructure
Labels	New Feature, Android, StarterBug
Assignee	None
Priority	Medium

md5: ed2beb47c341a1e51aec180c04c543cd

Issue Description:

I've only ever tried running the Swift test suite on a physical Android device. Would the test suite run using an Android emulator instead?

It would be very exciting if it did: it would allow a virtual continuous integration machine to run the Swift test suite for Android.

Prerequisites:

• An Ubuntu 15.10 development environment capable of building Swift from source.

• A physical Android device.

• An Android emulator, such as the one provided by the Android SDK, or a third-party emulator such as GenyMotion.

Helpful skills:
Basic knowledge of Python, Android developer tools, and CMake may help.

Starting point:

1. Follow the instructions in docs/Android.md to build and run the test suite on a physical Android device.

2. Disconnect the physical device and start an emulator instead. Try running the test suite.

The Swift Android test suite relies on commands like adb shell and adp push. Do those work on emulators? Do they need to be changed? If so, check out the utils/android directory.

[finagolfin]

I believe this should already work, because of the Android x86_64 support that has since been added, but I know of no one that has tried and confirmed it.

[finagolfin]

We are looking into adding this on the Swift CI, as seen in #80022.